| 摘要 |
A gastric fastening system is disclosed. The system contains a cannula for placement into a body lumen within a body. The cannula has a first end for positioning within the lumen, a collapsible region proximal to the first end for placement within the lumen, and an actuator for causing the collapsible region to collapse outwardly from the cannula so as to form a radial collar having a second diameter greater than the first diameter while foreshortening the length of the cannula. The collar secures the cannula against extraction from the lumen. |
